Iron Fist and Teenage Mutant Ninja Turtles

I quite liked the TMNT CGI film from a few years ago and was sorry to hear that there would not be a sequel.  The Turtles seem to be headed for the big screen again, this time under the control of Michael Bay, with Megan Fox as April O'Neil.  I have read that Bay will be straying from the comics, giving the Turtles a more alien related origin.  I  have my doubts but I will try and reserve judgement until I see some actual footage.